Monday, February 19, 2018

Point Contact Transistor build

My last post showed the close up view. Here you can see the block it is mounted in. It could be smaller but I'm using #12 wire and don't see the need to crowd things in the prototype.
I'm am feeding a signal into the transformer lower left and driving the telephone receiver center. It is not ear piercing but load enough I can hear it.

With all the leads attached it is not pretty but you can get a better view.
The scope tells the story. signal is passing through. Now the question is where to get the germanium? I have a couple of those 1N34As but , do I want to destroy one? Time to rumble through the junk bins.

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